How do you determine optimal ride frequency for a vehicle?

Ride frequency is the natural frequency of the sprung mass on the suspension springs. Optimal values balance comfort and handling: luxury vehicles target 1.0-1.2 Hz for comfort, sports cars 1.5-2.0 Hz for control. The front is typically set 10-20% lower than the rear for flat ride (front hits bump first, starts oscillating, rear catches up for even pitch motion). Spring rate is calculated from target frequency: k = (2*pi*f)^2 * m, considering motion ratio.